Hairbrush



FIG. 1 is a perspective view of a hairbrush showing my new design;

FIG. 2 is a perspective view thereof, shown with the teeth retracted;

FIG. 3 is a left side elevational view of the hairbrush as shown in FIG.1;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational thereof;

FIG. 7 is a top plan view thereof; and

FIG. 8 is a bottom plan view thereof.

The ornamental design for a hairbrush, as shown and described.